import {
  HttpStatus,
  Injectable,
  RequestTimeoutException,
} from '@nestjs/common';
import { Repository } from 'typeorm';
import { Test } from '../entities/test.entity';
import { InjectRepository } from '@nestjs/typeorm';
import { CreateTestDTO } from '../dtos/create-test.dto';
import { AppException } from '@/common/exceptions/app.exception';
import { AppResponse } from '@/common/responses';
import { I18nService } from 'nestjs-i18n';

@Injectable()
export class TestsService {
  constructor(
    /**
     * Inject Tests Repository
     */
    @InjectRepository(Test)
    private readonly testRepository: Repository<Test>,

    /**
     * Inject I18n Service
     */
    private readonly i18nService: I18nService,
  ) {}

  public async createOne(createTestDto: CreateTestDTO) {
    const titleExists = await this.testRepository.findOne({
      where: {
        title: createTestDto.title,
      },
    });

    if (titleExists) {
      throw new AppException('validation.duplicateField', HttpStatus.CONFLICT, {
        field: '$t(tests.fields.title)',
      });
    }

    const newTest = this.testRepository.create(createTestDto);

    try {
      await this.testRepository.save(newTest);
      return new AppResponse(
        newTest,
        this.i18nService.translate('tests.messages.createSuccess'),
      );
    } catch (err) {
      throw new RequestTimeoutException('common.errors.requestTimeout', {
        cause: err,
        description: 'Error connecting to the database',
      });
    }
  }
}